Limning Gem

This luminescent white gem glows from within, and a weapon it's applied to gains its inner radiance, shedding dim light in a 10-foot radius. Successful Strikes with a weapon affected by a limning gem outline the target in a bright white light; if the target was Invisible, it becomes Concealed instead. This light lasts until the end of your next turn or for the remainder of the limning gem's duration on a critical hit.